Apparatus for cleaning automobile cylinders



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APPARATUS FOR` CLEANING AUTOMOBILE CYLINDERS Filed June 29, 192; 2 smug-smo: 1

C'. Pemberiwz Sept. 30. 1924.

U. C. PEMBERTON APPARATUS FOR CLEANING AUTOMOBIL CYLINDE'S File June 29 JOI Patented Sept. 30, 1924.

UNITED STATES UZ C. PEMBER'ON, OF SEFFNER, FLORIDA.

APPARATUS FOR CLEANING AUTOMOBILE CYLINDERS.

Application led .Tune 29, 1921.

To al?. whom it may concern:

Be it known that l, UZ C. PnuBnnToN, a citizen of the United States, residing at Seffner, in the county of Hillsborough and State of Florida, have invented'certain new and useful Improvements in Apparatus for Cleaning Automobile Cylinders, of which the following is a specification.

This invention relates to .mechanism forl cleaning the carbon deposits from the cylinders and explosion chambersof automobile engines.

The means commonly employedV for removing the carbon deposits are burning with a flame of oxygen, and scraping with a scraping tool, both of which require great care and considerable skill to prevent injury to the walls of the cylinders. It has also been proposed to employ a rotary brush attached to the ordinary flexible shaft, but this was unsuccessful because it could not be properly controlled and there was no means for directing it to the various parts to be cleaned.

The purpose of my invention is to pro-` vide an apparatus which is positive in action and is `at all times under the direct control of the operator during every part of the operation so that the carbon may be removed from all portions of the cylinders and firing chambers and yet without danger of injuring the surface of the walls.

In the following detailed description l shall refer to theaccompanying drawings in which-Figure 1 is a side elevation of one form of apparatus embodying my invention; Fig.. 2 is a longitudinal sectional view of the cleaning tool; Fig. 3 is a sectional view of the abrading or cleaning brush taken on the line 3-3 of Fig. 2; Fig. 4 is an illustrative view showing the manner of cleaning a cylinder having a lateral spark plug aperture; Fig. 5 is a longitudinal sectional View of the outer end of the cleaning tool and one form of brush; Fig. 6 is a transverse sectional view on the line 6-6 of Fig. 5; Fig. 7 is a fragmentary view of the lower end of the tool, with the brush in section; Fig. 8 is a transverse sectional view on the. line 8-8 of Fig. 7 Fig. 9 is a side elevation, partly in section, of a modified form of cleaning tool and also illustrating the manner of using the same; Fig. 10 is another view of the tool shown in Fig. 10, with the brush partly retracted within the guiding sheath; Fig. 11 is an enlarged detail Serial No. 481,320.

in section showing the gear connection between the angular-ly arranged shafts; Fig. 12 is a longitudinal sectional view of the brush employed with the tool illustrated in Figs. 9 and 10, and showing its connection with the outer end of the flexible shaft; Fig. 13 is a transverse sectional view on the line 18-13 of Fig. 12; and Fig. 14C is a longitudinal sectional viewfof a furtherform of brush.

M y carbon removing apparatus comprises a cleaning or abrading brush having wire bristles 15, clamped within a socket 16, and an attaching head 1"? provided with an eye 18 to which the flexible chain 20 may be secured; a rigid shaft member 23, having a swivel eye member 24, to which the outer end of the flexible shafting 25 is secured, the latter 'being connected to a suitable driving motor 27. The chain portion 2O and bar portion 23 of the driving shaft are enc( sed in a rigid tube or sheath 30 which is curved or bent adjacent its outer end to serve as a rigid guiding or directing member. The degree of curvature or angle of the bend varies in the different tools which are made to conu form to the several makes of automobiles and the types of engines. Thus in certain types of engines, thel spark plugs are in axial alinement with the bore of the cylinders, in others, they are offset to one side in the manner illustrated in Fig. 9, while in some the spark plugs enter the combustion chamber through lateral openings in the cylinder walls, as shown' in Figs. 1 and 4. In each case the rigid directing and guiding sheath or casing 30 must be curved or bent to the proper particular' angle. which will enable the operator to direct the brush along the walls and across the top or head of the piston. It will be observed that the shaft portion 23 which extends through the straight portion of the directing casing or sheath may be a rigid bar, while the portion which extends through the curved part is formed of a flexible chain 20.

l construct the brushing or abrading member in different shapes to suit the varying conditions of the work and the positions which must be assumed by the tool in reaching the various parts of the cylinder and combustion or firing chamber. In Figs. 1, 2 and 3 the bundle of line steel wires 15, which constitute the bristles, are bent outwardly at right angles to form a round or disk like abrading wheel. In Figs. 5 and 6,

ing a stem 3T which is locked to a Washer 38.k

the Wires are separated into small groups or tufts and inserted in grooves in the periphery of the core block 19, which is then inserted in the socket 16. In Figs. 7 and 8, the individual Wires are separately inserted in perforations in the core block 19. After the bundles of Wire bristles are inserted Vthe sockets 16 are crimped or annularly grooved at 16a to secure the Wires in position. In the form shown in Figs. 9 and 12, the inner ends of the Wires are bound by `a heavy Wire 22 Woundspirally so that it form-s in etiect a screw-threaded socket and can be threaded into the end 'of a sp-iral flexible shaft 35. In the forni shown in Fig. 14;, the Wire bristles are spread outwardly into an annular brush and clamped by a disk 36, hav- It is sometimes desirable to contract the Wire bristles into a small space While Jche brush is being inserted thro-ugh the spark plug opening. For this purpose, I have devised the torni illustrate-d in Figs. 9 toy 13.

The outer portion of the drive-shaft may be a flexible spiral spring which is attached to the shaft member 23 and is enn cased' in a rigid tubular sheath 30% the y latter being arranged totelescope with the:

lbent at right angles.

main sheath or casing S0. By pushing the sheath 30a outwardly over the brush, as indicated in Fig. 19, the bristles or Wires 15 are crowded together into a smal-ler compassv and c-an be more easily inserted through the aperture in` the cylinder Wall. IVhen the brush is Within the cylinder or explosion chamber, the sheath may bel retrated to permit the brush to expand into normal. shape, It is frequently more convenient to have the main casing 30" I have t'o-und that a more staunch andA reliable construction is formed by employi-ng` bar shaft sections 23a and Qb which are held in stationar i bearings 4101, 41 and operatively connected by bevelled gears 45, 46.

The operation -will be evident from the above description of the structural parts in connection with the drawings. Vhen it is desired to remove the carbon from a cylinder and combustion chamber the spark plug is removed and the cleaning tool is inserted through the opening. The motor is started and the rotating brush is guided by the operator by means of the curved casing 30 and held with the proper pressure against; the walls. By employing the tool having the appropriate curvature, and properly shaped brush, every part of the walls can be reached and quickly cleaned without injury to the surface.

I claim 1. Apparatus for removing the carbon deposits from the cylinders and combustion chambers of internal coinlnlstion engines, comprising a rotary brush adapted to he inserted through the spark plug openings, n flexible driving shaft conneeted to `said brush, and a rigid tubular casing surrounding the brush supporting portion of' slid shaft, and sl-id'able telescopically over said shaft so that it may be moved over or away from the rear end of the brush. said rl id casing being curved or bent lutcrn ly. whereby the brush may be guided and directed against the Walls of the cylinders.

2. Apparatus tor reinoying the carbon de posits from the cylinders and combustion chambers of internal combustion engines, comprising a rotary brush adapted to be inserted through the spark plug o innings, a iiexible driving shaft connecte' to slid brush, and a rigid tubular casing surrounding the brush supporting portion of said shaft, tubular sheath surrounding the portion of said shaft towardI the driving end and slidable telescopically over said rigid casing, said rigid casing being curved or bent laterally and extending adjacent the rear end of the brush, whereby the brush may be guided and directed against the Walls of the cylinders.

In testimony whereof I aiiix my signature.

UZ C'. PEMBERTON. 

